We read the following in D&C 88:67:
And if your eye be single to my glory, your whole bodies shall be filled with light, and there shall be no darkness in you; and that body which is filled with light comprehendeth all things.
Mormon tells us the following:
Wherefore, my beloved brethren, pray unto the Father with all the energy of heart, that ye may be filled with this love [that is, charity], which he hath bestowed upon all who are true followers of his Son, Jesus Christ.
Now, when I fill a glass of water, I cannot fill it with milk until it is empty again. So how can we be filled with charity when our bodies are filled with light?